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Seed plants that lived during the carboniferous impact life on earth today because a. they are the ancestors of all plant life on earth. b. their remains formed coal, which is an important resource. c. they produced fossils that are used to date many geologic events. d. their presence caused oxygen levels to drop, allowing animals to evolve.

How would i answer this in a exam. orange - sea temperature is over 27 red arrows - tropical storm routes

The largest internal organ in the frog is the